$$('.video_thumb').addEvents({
		mouseenter: function(){
			
		this.getElement('img.play').set('morph', {
				duration:  100,
				transition: 'expo:out'
			}).morph({ 'opacity':0.4});
		},	
		mouseleave: function(){
			
		this.getElement('img.play').set('morph', {
				duration: 550,
				transition: 'expo:out'
			}).morph({  'opacity':1});
			
		}
	});	


		 $$('.video_archives div.video_archives_titre').addEvents({
		click: function(){
			var id = this.id.substring(9, this.id.length);
			if(!this.hasClass('hover')){
		
			this.addClass('hover');
			this.getParent('div.video_archives').set('morph', {
				duration: 600,
				transition: 'expo:out'
			}).morph({'height':this.getParent('div').getScrollSize().y});
			}else{
			this.removeClass('hover');
			this.getParent('div').set('morph', {
				duration: 600,
				transition: 'expo:out'
			}).morph({'height':'44px'});	
			}
		}

	});